Table A3: Table A3 : Mounting Face-Width Factor Coefficients, [ ¹²].

Gear Manufacturing Categories	Coefficients for C ma
	A 1	A 2	A 3
Open drives /Form cut gears	0.247	0.657	0.119
Commercial quality (enclosed)	0.127	0.622	0.01442
Precision quality (enclosed)	0.0675	0.504	0.144
High precision quality (enclosed)	0.0036	0.402	0.127